Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics,Shanghai Jiao Tong University, Shanghai 200240, China;
Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics,Shanghai Jiao Tong University, Shanghai 200240, China;
Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics,Shanghai Jiao Tong University, Shanghai 200240, China;
Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics,Shanghai Jiao Tong University, Shanghai 200240, China;
Department of Materials Science & Engineering, University of Utah, Salt Lake City, Utah 84112, USA;